IRS Links
Where's My Refund https://www.irs.gov/refunds
Pay your Federal Taxes https://www.irs.gov/payments
How do I know what to withhold or put on my W4? https://www.irs.gov/individuals/tax-withholding-estimator
State Links
Utah's Taxpayer's Access Point (TAP) https://tap.tax.utah.gov/TaxExpress/_/
Utah's Tax Calculator https://incometax.utah.gov/paying/tax-estimator